Typewriting-machine



E'. s. DODGE. TYPEWBITING MACHINE.

1,371,230. I I Patented Mar.15,1921;.

WITNESSES HIS ATTORNEY UNITED STATES PATENT OFFICE.

ELBERT s. DODGE, 0E ILION, NEw YORK, ASSIGNOR 'ro REMINGTON TAIYPEWRITER COMPANY, or ILION, NEw YORK, A CORPORATION or NEW YORK.

TYPEWEITINQMACEINE.

Specification of Letters Patent.

Application filed December 26, 1918. Serial No. 268,252.

To all whom it may concern:

Be it known that I, ELBERT S. DODGE citizen of the United States, and resident of Ilion, in the county of I-Ierkimer and State 7 new and improved devices of the character specified.

To the above and other ends which will hereinafter appear my present invention I .COIlSlStS in the features of construction, combinations of devices, and arrangements of parts hereinafter described and particularly pointed out in the claims.

y invention is especially des1gned for use in typewriting machines, and is more particularly concerned with the provisionof a stop that may be easily mounted on its support and removed or detached therefrom,

and that while on said support is firmly maintained in place in close relationship therewith as distinguished from a loosevand insecure mounting. Heretofore difiiculty has been found in producing stops that were suitable for use on a toothed stop bar or rack, such for example as that of the Remington typewriting machine. In cutting the slots or kerfs in a stop bar it is difficult to make all slots of uniform depth, and this is particularly true where two sets of rack teeth are provided at opposite sides of the stop bar. In such case, cutting one set of teeth in. a stop bar which is at the outset of uniform cross-section throughout, results in a slight warping or bending of the bar, the consequence being that when the other set of teeth are cut in the opposite face or side of the bar a variation in depth of cut results While this variation may be slight it not infrequently happens that as a consequence a slotted or notched stop that may be passed down readily at one place over the bar and into the space betweenthe teeth, cannot be fitted on the bar at another place. By my invention this difficulty or defect is overcome. In carrying out the invention I preferably provide a stop or stop device having a central portion or filler teeth and two side plates or pieces fixed t0 the central portion and also provided with I notches or slots which are adapted to fit into the spaces between the teeth of the stop bar. The notches in the side plates are of such wldth, however, that they do not extend to the bottoms of the kerfs or cuts forming the teeth, there being sufficient clearance to allow for any variation in depth of out throughout the length of the bar. The result is the provision of a bifurcated stop device that may readily be applied t0 the bar anywherealong its length and which "is nevertheless not loose and wabbly but closely engages with the bar. Preferably also I provide a detent device which insures the retention of the stop in place, sa1d detent device readily yielding Patented Mar. 15, 1921 automatically when the stop is pulled off.

The stop is ordinarily designated as a straddle stop since it bridges or covers a plurality of teeth on the stop bar or rack and the spaces between said teeth. In the present instance the central portion covers or straddles the space between two teeth along the bar, the side plates engaging in the tooth spaces outside said teeth.

The invention will be more specifically described in connection with the accompanying drawings wherein Figure 1 is a perspective view of part of a stop rack or bar showing one of my improved stops mounted thereon. I 1

'Fig. 2 is a sectionalview taken through the stop illustrated in Fig. 1 and transversely of the rack bar.

Fig. 3'is a horizontal sectionalview taken onthe plane indicated by the dotted line w w in'Fig. 2 and-looking downward, as indicated by the arrow.

Fig. 4 is a perspective view of a detached stop. 1

Figs, 2 and 3 are drawn to a somewhat considerably larger scale than the other figures. Y

The support, stop bar or rack bar 1 illustrated herein, corresponds with the stop bar of the column selecting mechanism founcLin the N0. 10 Remington typewriting machine.

Said stop bar is provided with two sets of teeth 2 projecting from o poeite faces, the space between any two of t e teeth bein indicated by the reference numeral 3. here is thus provided a double rack bar with two sets of teeth facing outward away from each other. My novel stop device, designated as I or wall of the slot 6 is only enough greater two plates, pieces the a whole by the reference numeral 4, com.- prises a central or middle portion or filler 5 which is cut out to provide a slot or notch 6 of such width that the part 5 may be fitted readily but snugly down over the stop bar outside the teeth 2; that is to say, the distance from one face or wall to the other face than the distance between the outer faces or tops of the two sets of rack teeth 2 to enable the part 5 to be passed downward over the stop bar and closely fit or'embrace the same between the forks or branches into which art 5 is divided by the slot 6. The Widt of the filler piece 5 'is substantially equal to the width of two of the rack teeth 2 and of the tooth space 3 separating them. Secured to the outer faces of the piece 5 are or interdental portions 7 that are of a thickness such as to enable them to be fitted readilyinto the tooth spaces 3.

on the stop bar but without looseness. The plates 7 are suitably secured in fixed relationship with the filler or central part 5 as by rivets 8 and are notched or slotted as indlcated at 9. The slots 9 register with the slots 6 but are narrower, being of such width that allowing for variations in the depth of the tooth spaces or kerfs 3 throughout the length of the stop bar, the boundary walls or faces of the slots 9 will never contact with the bottoms of the tooth spaces but will ex tend only part way into them. In other words, allowing for the maximum of variation in the depths of the tooth spaces there will always be a clearance between the bottoms of the tooth spaces and interdental portions or edges of the slots 9, this clearance being indicated 1n Fig. 3 by the reference numeral 10. The result of this construction is that the stop device may be readily slipped down and fitted over the stop bar atany engaging poi nt along its length, and yet will always engage snugly with the bar without looseness, the slot 6 providing a bearing portion that at its end seats on the face or top of'the stop bar and the parallel walls of said slot bearing or seating on the outer faces of a plurality of the teeth of the bar. In the present instance the slotted or divided part 5 is -provided at one branch or fork with a projecting lug or stop proper 5 which is adapted for cobperatlon with another stop devlce. This stop lug is shown as it would be disposed in a stop for the Remington ma-. chine, projecting rearward for cobperation with one of'the key actuated stops that is mounted on the frame of the machine as is well understood, this key actuated stop, however, not b 'ng shown herein.

In order 0 insure the retention of the bifurcated stop when in place on its toothed support or stop bar, detent devices are preferably provided, the said devices in the preshaving ent instance comprising a plunger or pin 11 a rounded nose 12 and a head 13, said pin beingslidably mounted in an opening 14 in one fork or branch of the notched central" part 5 near its free end, and so located that, as best shown in Fig. 2, the nose 12 will cobperate with one of the lower corners of the stop bar. The plunger or pin 11 is controlled by an angular flat or leaf spring 1 5 that cooperates at its free end with the head 13 and thence extends upward between the side plates'7, which are extended rearward to form a sort of trou h or housing 16 to protect the free end portion of the leaf spring. Said spring bends around over the top of the central part 5 and is suitably secured thereto as by a screw 17 said screw in the present instance being formed outwardly with a finger piece 18 by which the stop as a whole may be manipulated; that is, it may be pushed down on the stop bar or pulled off therefrom with facility, the detent devices being .automatic, and yielding readily to permit detachment and replacement of the stop without, as in most cases, requiring a separate manipulation preliminary to the detachment. The rounded nose 12 operates, it will be understood, as a cam in cobperation with the corner of the stop bar to force the detent plunger outward as the stop is pulled off, while said nose or cam acts normally to draw the stop down onto the top of the rack bar; the force of the spring acting at this time through said nose or cam in a downward direction or diametrically opposite to that in which it is necessary to pull in withdrawing the stop from the rack bar.

It will also be understood that my invention may be applied to other styles of supports or stop bars than the one shown and that the method of embodying it may be varied without departing from said invention.

What I claim as new and desire to secure by Letters Patent, is:

1. A stop for use on stop bars in typewriting machines comprising a body portion provided with a notch, and two notched side portions or plates fixedly secured to opposite sides of said body portion with their notc es in general register therewith so that the stop may fit over the stop bar, the notches in the plates being narrower than the notch in said body portion.

2. A stop for use on stop bars in typewriting machines comprising a notched body portion and two notched plates riveted to opposite sides of said body portion, the notched body portion and the two notched plates being adapted 3. A stop for use on stop bars in type writing machines comprising a notched body portion and two notched plates riveted to opposite ides of said body portion, said to fit over the stop bar.

body portion being provided with a projectmg lug or stop proper, the notched body portion and the two notched plates being adapted to fit-over the stop bar.

4. A stop for use in typewriting machines comprising a notched body portion and two notched plates connected to opposite sides of said body portion, said body portion being provided with a projecting lug or stop proper and-also with a finger piece. a

5. A stop for use in typewriting machines comprising a notched body portion and two notched plates connected to opposite sides of said body portion, said body portion being provided with a projecting stop lug and also with a finger piece and also carrying a detent that is adapted to co-act with a corner of the stop bar on which said stop bar is adiptedto be mounted.

stop for use in typewriting machines three parts held in permanent comprising each part being provided with relationship,

a slot that registers with the slots in the other parts, the slot in the central part differing in width from the slots inthe two outer parts.

7. The combination with a stop bar of a typewriting machine, said bar being provided with teeth projecting from opposite sides, of a stop comprising three parts held in permanent relationship, each part being provided with a slot that registers with the slots in the other parts, the slot in the central part being of greater width than the slots in the two outer parts so as to cooperate with the tops of the teeth in said stop bar, the lots in said two outer parts being adapted to fit over a rack or stop bar to fit loosely into the spaces between said teeth. t

8. A stop for use in typewriting machines in combination with a toothed sto bar or rack, said stop comprising a centra part or filler and two parallel plates fixed to the outer faces of said filler and adapted to cooperate with the spaces between the teeth of said toothed stop bar, the filler being of such width that one of the spaces in the stop bar or rack is skipped by the side engaging plates. I

9. A stop for use in typewriting machines comprising a center plates fixed thereto, said stop being adapted rovlded with kerfs, the fit of the stop on the rack being controlled by the opening in said center piece, the side plates being out of contact with the bottoms of the kerfs.

plece and two side 10. A stop for use in typewriting machines comprising a center 1ece and two side plates fixed thereto, sa1d stop being adapted to fit snugly at its central portion over a rack or stop bar provided with kerfs, the side plates being'out of contact with the bottoms of the kerfs, the width of said stop being such that three kerfsin the stop bar are covered by the stop as a whole, the central kerf being straddled by the center iece.

Signed at Ilion, I mer, and State of New York this 17th day of December, A. D. 1918.

ELBERT S. DODGE.

Witnesses: a

LINNIE F. BURNETT, ERNEsrB. BISHOP.

in the county of erki- 

